Bake cake until golden brown and tester inserted into center comes out clean, about 40 minutes. Place pan on rack; cool cake completely in pan. DO AHEAD Can be made 2 days ahead. Cover cake pan with foil and let stand at room temperature.

Sauce and berries

Combine 2 cups sliced strawberries and 1 tablespoon sugar in processor; blend until smooth. Sweeten sauce with more sugar, if desired; transfer to small bowl. DO AHEAD Can be made 1 day ahead. Cover and chill.